Dwyer 668D-02-1 is a Compact Differential Pressure Transmitter with an operating temperature range of 0 to 170°F (-18 to 77°C) and an accuracy of ±0.8% FS. It requires 12 to 32 VDC power and has electrical connections via a terminal strip. It offers multiple output options of 4 to 20 mA (2-wire), 0 to 10 VDC (3-wire), or 0 to 5 VDC (3-wire). Zero and span adjustments are accessible under the small terminal cover. This transmitter is suitable for air and non-conductive gases, with a pressure limit of 15 psig (1.0 bar). It has a process connection of 3/16" OD barbed brass for 1/8" ID push-on tubing. The enclosure is made of stainless steel and PC+ABS alloy, UL 94 V-0 rated. It has a thermal effect of ±0.03% FS/°F (±0.054% FS/°C) and a compensated range from 40 to 170°F (4.4 to 77°C).